function formingMagicSquare(s) {
    var input = s.reduce((a, b) => a.concat(b));
    var cost = (answer) => answer.reduce((sum, v, i) => sum += Math.abs(v - input[i]), 0);
    var answers = [[8, 1, 6, 3, 5, 7, 4, 9, 2], [6, 1, 8, 7, 5, 3, 2, 9, 4], [4, 9, 2, 3, 5, 7, 8, 1, 6], [2, 9, 4, 7, 5, 3, 6, 1, 8],
    [8, 3, 4, 1, 5, 9, 6, 7, 2], [4, 3, 8, 9, 5, 1, 2, 7, 6], [6, 7, 2, 1, 5, 9, 8, 3, 4], [2, 7, 6, 9, 5, 1, 4, 3, 8]];
    return Math.min(...answers.map(v => cost(v)))
}